But until then, the Inca Empire flourished. It didn't have writing, but it was an efficient military society, an ordered, productive and wealthy civilisation centred on Cusco in Peru. Its economy ...

the Inca assimilated multiple regional tribes in a 300,000-square-mile area to produce a complex empire with a population estimated between 3 and 12 million. The realm, which they called ...

"Land of the Four Quarters" or Tahuantinsuyu is the name the Inca gave to their empire. It stretched north to south some 2,500 miles along the high mountainous Andean range from Colombia to Chile ...

But until then, the Inca Empire flourished. It didn't have writing, but it was an efficient military society, an ordered, productive and wealthy civilisation centred on Cusco in Peru. Its economy ...